库斯莫呼吸特征是
A.呼吸幅度由浅至深,再浅至停
B.呼吸与暂停相交替
C.呼吸表浅、快速
D.呼吸深大、频率稍快
E.呼吸急促、有屏气
参考答案:D
Which of the following describes a preterm neonate()
A. A neonate weighing less than 2,500 g (5 lb, 8 oz).
B. A low-birth-weight neonate.
C. A neonate born at less than 37 weeks’ gestation regardless of weight.
D. A neonate diagnosed with intrauterine growth retardation.
食品安全无小事,不久前发生的“染色馒头”和“毒豆芽’’事件,受到社会广泛关注.
(1)“染色馒头”是在馒头中添加了柠檬黄色素,柠檬黄中含有铬酸铅(PbCrO4),它是一种致癌物.已知铬酸铅中铅元素的化合价为+2价,则铬元素的化合价为______;
(2)“毒豆芽”是在豆芽生产过程中违规加入了尿素、亚硝酸盐、恩诺沙星等物质,其中加入的尿素属于化肥中的______肥.